06-03-2016, 12:53 AM
|
#9 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,779
Thanks: 8,176
Thanked 8,950 Times in 7,392 Posts
|
Traditionalists would use a hole-saw and swiss-cheese the whole thing.
https://en.wikipedia.org/wiki/Lightening_holes
Flanged lightening holes. |
|
|
|